[PATCH] D30925: VirtRegMap: Correctly deal with bundles when deleting identity copies.

[Matthias Braun via Phabricator via llvm-commits]

MatzeB created this revision.
Herald added subscribers: wdng, mcrosier.

This fixes two problems when VirtRegMap encounters bundles:

- When substituting a vreg subregister def with an actual register the internal read flag must be cleared.
- Removing an identity COPY from a bundle needs to use removeFromBundle() and a newly introduced function to update SlotIndexes.

No testcase here, because none of the in-tree targets trigger this, however an upcoming commit of mine will need this and the testcase there will trigger this.


Repository:
  rL LLVM

https://reviews.llvm.org/D30925

Files:
  include/llvm/CodeGen/SlotIndexes.h
  lib/CodeGen/SlotIndexes.cpp
  lib/CodeGen/VirtRegMap.cpp

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